Dispensing apparatus



July 15, 1958 H. A. cHlNcHoLE 2,843,294

` DISPENSING APPARATUS A Filed July 5. 1956 V 6 Sheets-Sheet 1 July 15,1958 H. A. cHlNcHoLE 2,843,294

DISPENSING APPARATUS Filed July 5, 1956 6 Shee ts-Sheet 2 BY M, WM M@ ATTORNEYS.l

July 15, 1958 l H. A. cHlNcHoLE 2,843,294

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ATTORNEYS July 15, 1958 H. A. cHlNcHoLE 2,843,294

DISPENSING APPARATUS F11-ed July 5, 195s 6 Shee ts-Sheet 4 A A R A A w NNY; WN MMV ma mw mw N A a -l A NAA Y www mw AKW Si@ Y mm 1% #um INVENTOR,

- MMM' A MAM a 1J/MLM ATTORNEYS H. A. cHlNcHoLE 2,843,294

DISPENSING APPARATUS July 15, 1958 Filed July 5, 1956 6 Sheets-Sheet 5 July 15, 1958l H. A. cHlNcHoLE 2,843,294

DISPENSING APPARATUS Filed July 5, 1956 6 Sheets-Sheet 6 INVENTOR,

ATTORNEYS,

United States Patent O DISPENSING APPARATUS Henri A. AChinchole, Paris, France Application July 5, 1955, Serial No. 520,074

16 Claims. (Cl. Z22- 162) This invention relates to dispensing, and more particularly to apparatusfor dispensing viscous or semi-solid` materials such as heavy lubricants under pressure.

There are certain high pressure grease distributors in the prior art which utilize impact packing for facilitating theiilling of a dispensing pump. These devices'tend to communicate to the mass of grease, a vertically directed l e downward acceleration which charges the grease with Vkinetic energy and drives it into the pump body. This device operates eiliciently s o long as the internal resistance of the grease to shear is less than or at most equal to the charge of kinetic energy which can be imparted to e relatively large receptacles by minimizing the residual.

quantity of grease or lubricant not removed by the pumping operation.

Another object of this invention is to minimize the introduction of foreign matter into greases and` lubricants which are to be dispensed from a series of receptacles by a single apparatus.

The present invention features improved dispensing apparatus having a pump body which is movable and rests on the inner bottom of a commercial receptacle. into which the grease or lubricant is delivered normally for consumption. The receptacle is raised upwardly by a single acting compressed air motor which upon arriving at the top dead center of its stroke falls back relatively quickly under the weight of the receptacle. In its rising motion, the `pump body rises` against a stationary piston. the piston removes a quantity of grease corresponding to the volume of the pump` through a flexible hose.

The cover of the receptacle is replaced by a follower plate which scrapesthe inner wall of the receptacle. This plate rests on the upper surface of the grease and descends by atmospheric pressure as the latter is used. The plate has a heavy weight elastically suspended above ,it by springs. This weight, upon dropping from the top deadcenter to the bottom dead-center, comes to a stop at the bottom dead-center. All they kinetic energy with which the weight is charged causes Vthe latter to strike against Vthe follower. The latter transmits this impact to the entire mass of the grease, which transmits it all the way to the bottom part where the pump body is located.

The kinetic energy contained in the weight is dissipated in the follower., This action not only has the effect of placing the follower against the grease, but also produces a downwardly directed disturbance in the grease which `facilitates the lling of the pump. The action is such that the grease drawn in by the pump' at the bottom of the receptacle has an upward push simultaneously imparted thereto.

The vresulting shock wave produced by the foregoing disturbance opposes the hardening of the grease, which would otherwise make the filling of the pump `increasingly diiiicult. As is well known, grease has the 'disturbing property of hardening at rest. This phenomenon is known as thixotropy. The continuous ramming action of the weight maintains the grease in as uid a condition as permitted by its nature.

In order thatall of the features for attaining the objects of this invention may be readily understood, reference is herein made to the drawings wherein:

Figure 1 is an elevation view of a preferred embodiment of Ythe apparatus of this invention shown partly `in section, with vthe follower shown in two positions in which the upper position in broken line show s the follower :plate lying on the surface of the grease contained in a receptacle, and in which the second position of `the follower shown in solid line is that attained when the receptacle is emptied `of grease;

Figure 2 is a sectional view of a motor actuated by compressed air for `driving a'receptacle containing grease through the requisite reciprocatingmovements;

Figure 3 is a view showing a coil-spring employed in the `motor of Figure 2;`

Figures 4 through 10 are arseries of sectional views of the grease pumpshowing the positioningof pump components at various stages of a pumping cycle; y

Figure .l1 is an elevation view showing Vthe dispenser of this invention with the pump and follower' plate `re- .moved from an 1emptied receptacle;

Figure l2 is an enlarged sectional view of `the structural details of the follower, pump and motor;

Figure 13 is an `enlarged view of the pump piston details;

Figure 14 is a view taken along line 14-14 of Figures 1 and 12 and showing the details of the air connections to an elevating column;

Figure` 15 is a sectional` vievsI taken along line 15-15 `of Figure 1 and ,showing the details of an elevating column; and

Figure 16 is a sectional view of a portion of the elevating column shown in Figure 15 positioned to admit .air to the associated elevating column.

Referring now to thepreferred embodiment shown in the drawings, the apparatus consists of a stationary `frame 1 having four arms 2 on the .vertical axis and a motor 3 receiving compressed air through the conduit `4.

`Figures 1 and l2 show the motor at `bottom center. The horizontal frame 1` has four feet 5 resting on the ground through rubber blocks.y Two columns 6 having a cross-beam 7 is supported on the frame. As islshown `in Figure l5 these `columns consist of tubes 8 within which are positioned slide rods 9 capable of being screwed by means of a thread 10 into the base of frame 1 by ,meansof cranks 11. Stufling boxes 12 assure tightness V,so thatthe beam 7 can rise under* the action of the two rods 9 if compressed air Vis `admitted lat`13 Vas soon as `the threads, 10.are unscrewed as' is shown` in `Figure 16,

with each columnthen acting as a pneumatic jack. The

,ascending motion of each jack is limited by a `keeper `14 which `rat Vthetop of the stroke comesagainst the stuifing box 12. Thel beam `7 is traversed atits center by a steel tube 1S, the lower endof which is provided with a Atip 16 shownrin Figures 4 through 10 and 16 `constituting the piston of lthe pump.

This tip has a'ap valve 18 and issurroundedby `a `sleeve 19,A towhich it is connected by friction by a ring Zilfhoused inea recess 21,in the tip 16. ,The ring "20 is slit and exerts Vfriction., on theinside of the sleeve 19. Itresults from this that the sleeve'19 can slide on Y 3 v the tip 16 only if a positive drive is imparted to it, either upwardly or downwardly.

A pump body 22 is connected by four small columns 23 to a part 24 in which there is a stuing box 25 actuated by a spring 26 tending to assure tightness between the tube 15 and the part 24. A sheathing 27 forms an extension on the outside of the part 24 which is of the same diameter. The sheathing 27 is closed at its upper end by a stopper 28 through which there passes a tube 29. The stopper 2B can slide freely on the tube 29. A nut 72 terminates the tube 29. This nut is located at a small distance from the stopper 28.

Within the sheathing there are one or two springs 30 which rest at one end against the tube 29 and at the other end against the disk 31 which holds the spring 26 of the stuffing box 25. The follower consists of a hollow shaped supply cone 32 on which there are mounted two plates 33 separated by a sealing packing in which there are located columns 34 on which there can slide a weight 3S suspended elastically on the plates by means ofthe compression springs 36. The follower 32 is closed at its lower part by a plate 37 provided with small holes very close to each other. Between 37 and 32 there is located a circular sealing gasket 38 intended t-o scrape the inner wall of the grease receptacle 39.

This receptacle rests, through its horizontal end, on a plate 40 bearing slides 41 which slide in the stationary arms 2. This plate rests on rubber buffers 42 enclosed in the upper horizontal side of the pneumatic motor 3. The emergence of the grease from the upper end of the tube 15 is effected by means of an elbow 43 which by means of suitable couplings is connected with a valve handle 44 by a flexible tube 45. The valve handle can be connected to the part to be lubricated by a hook 46. The motor 3 has a piston 47 terminating in a plug 48 bearing a rubber block 49. Within the piston there is a drive rod 50 which is extended by a bi-conical member 51 connected to a small plate 52 4on which the discharge valve 53 is fastened. On both sides of this valve, controlled by the plate 52, there are two admission valves 54. The 'bi-conical part 51 passes through an elastic torus 55 consisting of a draw spring closed on itself by means of a small bolt.

The apparatus has three air inlets. The first, connected to the tube 4, serves for the feeding of the motor. The second, connected to the tube 56, serves to loosen the follower 32, 37 when the latter adheres to the bottom of the tank 39. The third is connected to the tube 57 which, by means of the elbow 13 and the extension tube 58 raises the jacks 9 when the threads 10 have been unscrewed.

In accordance with the above description, the operation is as follows:

The tank 39, which is full of grease, is placed on the plate 40, the follower rests on the upper part of the grease and cannot sink as a result of the gasket 38. The sheathing 27 has penetrated axially into the mass of grease and the pump body 22 rests on the end of the tank by its lower face. The springs 30 are under slight tension. The compressed air is connected to the tube 4, and finds the motor 3 at its bottom center, that is to say the discharge valve 53 is closed and the admission valves 54 are open. The air penetrates below piston 47 and the latter, through the rubber block 49, starts to lift the plate 40 and the drum 39. The plate 40 slides on guide rods 41. The raising Iof the plate in its turn raises the pump body 22 which, by means of the columns 23, moves the part 24 and the sheath 27 upwardly, compressing the springs 30. The pump body 22 and the chamber 58 are assumed lled with grease at the start as is shown in Figure 4. When the pump body 22 arrives at contact with the sleeve 19 as is shown in Figure 5, it starts to push the latter upwardly which is possible since the shoulder of the part 24, against which the sleeve 19 rested at the top, has moved back at the same time as part 22 moved upwardly, since parts 22 and 24 are held together as a single unit due to the columns 23.

The ascending motion of 22 continuing, the sleeve 19 continues to rise without the tip 16 moving its position, which has the effect of progressively reducing the volume of chamber 58. The grease contained originally in the space 58 is therefore transferred into the pump body 22 to complete its lling if necessary. As soon as the iilling is eiected, the remaining grease present in 58 depresses valve 18 and, entering into the tube 15, discharges an equivalent quantity of grease into the elbow 43 and the tubes 45. The part 22 continuing its ascending movement under the thrust of the air piston 47, the tip 16 starts to penetrate into it as is shown in Figure 6 and due to the sealing joints provided at 59, the pressure increases in the pump body 22 as the pump body decreases in volume. During this entire period of time, the sleeve 19 which has rested at the bottom on the part 22 rises, sliding on the tip 16 on which it rubs through the extendable ring 20. During its upward motion, the air piston 47 is nally driven along the rod 50 due to the shoulders 60 and 61 which are encountered.

This movement has brought about the parallel rising of the bi-conical member 51 which enters into the torus 55. The latter is held by two surfaces 62 and 63 which enable it to expand laterally, but which prevent it from effecting any axial movement. This torus clears the base common to the two truncated cones and tightens on the lower truncated cone as is shown in Figure 2. At this moment, the small plate 52 rises under the simultaneous action of the contraction of the elastic torus 55 and of the air piston 47 through the shoulders 60 and 61. By its rise, the small plate S2 moves the discharge valve 53 from its seat and frees the two admission valves 54 which, under the action of the compressed air, are closed simultaneously.

At this moment, the air feed is cut off, and the air contained in the motor is suddenly liberated to the outer air through the discharge orifice 64. The upper deadcenter is reached. The pump body 22 has practically again come to the tip 16 as is shown in Figure 7, and the volume of grease left in the pump body 22 is reduced to a minimum. The springs 30 are compressed to the maximum.

At this moment, the descent of piston 47 takes place under the combined thrust of the weight of plate 40, the reservoir 39 and the grease contained in it, the expansion of springs 30 and the additional weight of the follower 32 and of the weight 35. A descending motion of the entire system starts, braked only by the flow of air in the outlet orice 64. This outlet can be controlled by a needle in order to avoid too rapid a descent of the moving system.

In this drop, the pump body 22 slides along the stationary piston 16, leaving a relative vacuum behind it in the chamber 22 as is shown in Figure 8. The part 24, through its shoulder, encounters the top part of the sleeve 19 and the latter, pushed by member 24, slides on the tip 16. The pump body 22 is released from the tip, leaving the grease compression chamber 22 completely open as is shown in Figure 9. Continuing the descent, the member 24 pushes the sleeve 19 until the latter has advanced over the tip 16, creating a second chamber 58 which also, by the progressive increase of its volume, tends to become i'llled with grease by aspiration.

During the descent, the plug 48 has come against the drive rod 5t) as is shown in Figure 2 and the latter has carried out, with respect to the elastic torus 55, the motion opposite the rise, forcing the torus to pass from the lower icone to the upper cone. This action has pressed the plate 52 downward, closing the air outlet 53 and sirnul taneously opening the re-entrance of the compressed air by the flap valves 54. At the lower dead-center shown in Figure l0, the motor again starts its ascending motion and the cycle continues.

Between the descent `of the grease tank beforethe lower dead-center and the rise again of the said tank after the bottom dead-center, there is ihe moment of impact. The plate 40, the tank 39, thegrease contained in it and the follower 32 are suddenly stopped by striking against the elastic blocks 42. The kinetic energy contained in these members dissipates itself in the impact. On the other hand, the kinetic energy contained in the weight 35 shown in Figure suddenly brings the latter downward, compressing the springs 36 and the kinetic energy of the weight is dissipated inthe follower 32 which receives an upward blow. This action has the effect not only of placing the follower against the grease, but also of producing downward in the latter a disturbance form of a shock wave which facilitates the filling of the pump 22 in which thereprevails a partial vacuum, as well as in the chamber 58. Everything takes place as though the grease drawn in from the bottom were simultaneously imparted an upward push.

It should be noted that at this moment, corresponding to `the bottom dead-center of the motor, the distance between the pump 22 and the piston 16 is a maximum as is shown in Figure l.

The shock `wave opposes the hardening of the grease in the form of a cake, which would make the filling of the `pump increasingly difficult. The continuous ramming action of the weight maintains the grease in as ,fluid a condition as is permitted by'its nature, thus facilitating the entrance into the pump body.` The ramming action of the follower also permits the latter to be filled by the grease entering in the holes of the plate 37. 'Ihe follower reaches the position indicated in Figure l( after the pumping of the entire volume oflubricant. At this moment, the Vperforated plate 37 is a very slight distance from the end of the drum 39. It is advisable to change the empty drum and replace it with a full drum. This operation would in itself be extremely inconvenient to `carry out, for which reason the apparatus is provided with an automatic mechanism.

The compressed air being disconnected from the tip `4, it is necessary to free, by unscrewing the cranks 11,

`the two rods 9 screwed into the base 1; thereupon the compressed air is connected to the connection66 which forms an extension of the inlet of tube 56. This tube `56 forms a single unitby construction with the sheath 27 to which it is connected by means of the support 67 lheld by the plug 28 and the collar 68 which holds it to vided With an orifice for the passage of tube 56 on which the follower descends progressively in the same way as it descends on the sheath 27. This tube 56 terminates in a nozzle 69 screwed to its lower part which permits the compressed air to escape laterally into the space present between the end of the drum and the plate 37.

The arrival of air into this space has the effect of `loosening the follower from the drum by destroying the substantial adherence which atmospheric pressure would exert between these two members if a vacuum prevailed, as is the case when this space is filled with grease. The follower 32-37 is readily loosened from the end of the drum, but the plate `37, the perforations of which have enabled the grease topenetrate into the space 32--37, opposes Athe return of the grease which remains imprisoned in the space 32-37 This quantity of grease can, therefore, be brought to the inside of the follower on the full drum and not be lost. On the other hand, tl1`e end lof the empty drum will be clean and will retain only an 6 the jacks raises them causing them to slide in tubes 3, the tightness of which is maintained by means ofthe stuffing` boxes 12. On rising, the two jacks drive the beam 7 upward and the latter, via the member 71 and the nut 72, drives upward in its ascending motionthe sheath 27 and the piston body 1S and the pump body 22.

As the latter, as well as the rings 73 and 74, are of a slightly greater diameter at the bottom of sheath 24, the shoulder on ring `74 cannot pass through the borehole of the plates 33 of `the follower. The follower is, therefore, compelled to move upward following the beam 7 and as the empty barrel is of relatively light weight, the follower will not fail to drive the latter along in its ascending motion. In order to oppose this, the drum is held fastened to the plate 4t) by two screws 75 carried on supports 76.

The plate rises slightly, but cannot free itself from the base 1 due to the pins 77 fastened in the slides 41. The follower, therefore, again moves in opposite direction over its path within the drum, and the length of the jacks is calculated in such a manner that the follower is entirely released from the empty drum'. The plate 40 then drops back into its position in which it rests on the blocks 42. The follower is completely released and is maintained in position as long as compressed air remains on the jacks. Therefore, one has more than sufficient time to loosen the screws 75 and free the empty drum and replace it with a full drum. At this moment, the air inlet is disconnected from nozzle 70 and the air of the jacks escapes, the beam 7 therefore dropping together with the follower, the sheath and the piston.

As soon as the follower encounters the upper surface of the grease zof the full barrel, it rests thereon but the sheath, under the weight of the beam 7, descends along the axis of the drum making a hole in the mass of grease until the pump body 22 and the nozzle 69 come to rest on the flat bottom of the drum. The jacks are again screwed into the base 1 by means of the cranks 11, which compresses the springs 30, and the system is ready to operate Ion the new drum. It is merely necessary to connect the compressed air connection to the nozzle 4. In this marmer a complete emptying of the original drum is obtained. The latter can be withdrawn and a full one put in its place without the necessity of touching the grease or any of the members in contact with the grease.

It should be noted that the flexible tubing and the valve handle are supported by the beam7 at both ends, which `avoids any removal of the flexible hose during the changing of the drum, the latter rising at the same time as the beam 7 during the operation of the jacks as is shown in Figure l1. The members in contact with the grease remain in their operatingposition, thus avoiding the soiling to which ordinary removable pumps are exposed, with which pumps there is a tendency to place on the ground while the drums are changed. They run the risk of becoming dirty and of introducing impurities into the full tank which may endanger the proper operation of the pump.

It is to be understood that the above-described arrangements are illustrative of the application of the principles of this invention. Numerous other arrangements may be devised by those skilled in the art without departing from the scope of the invention.

Having thus described the invention, `what is claimed as new and desired to be secured by Letters Patent is:

l. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant in both directions along an axis of movement, a fluid pump including a piston and a body having a recess for receiving said piston, said piston and body being relatively movable with respect to one another along said axis of movement, means including a frame work and a cylindrical member connecting said pump andsaid frame work for positioning said pump adjacent the bottom of said receptacle and an inertia actuated `fluid follower slidably mounted on said cylindrical member. i

2. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant in both directions along an axis of movement, a fluid pump including a piston and a body having a recess for receiving said piston, said piston and body being relatively movable with respect to one another along said axis of movement, an inertia actuated fluid follower having a generally inverted cup shape, said lluid follower including a weight resiliently mounted on said follower for applying an impact force thereto in response to the sudden movement of the receptacle, and means including a frame work and a cylindrical member connecting said pump and said frame work for positioning said pump within said receptacle and adjacent the bottom thereof.

3. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant slowly in a first direction along an axis of movement and quickly in the reverse direction, a fluid pump including a piston and a body having a recess for receiving said piston, said piston and body being relatively movable with respect to one another along said axis of movement, a fluid follower having a generally inverted cup shape, and means including a frame work and a cylindrical member connecting said pump and said frame work for positioning said pump within said receptacle, said fluid follower being slidably mounted on said cylindrical member and movable thereon in response to reciprocating motion imparted to the bottom of said receptacle.

4. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant `slowly in a first direction along an axis of movement and quickly in the reverse direction, a fluid pump including a piston and a body having a recess for receiving said piston, said piston and body being relatively movable with respect to one another along said axis of movement, a fluid follower, and means including a frame work and a cylindrical member for positioning said pump within the receptacle and coupled to said fluid follower with the pump body resting on the bottom of the receptacle and pumping fluid in response to the movement of the receptacle in the first direction and a weight coupled to said fluid follower and applying an impact force thereto in response to the quick movement of the receptacle in the reverse direction.

5. In a dispenser for lubricants which are stored withina receptacle, means for moving a recptacle containing a lubricant slowly in a first direction along an axis of movement and quickly in the reverse direction, a tluid pump, a fluid follower, and means including a frame work connected to said pump for positioning said pump axially within said fluid follower with the pump resting on the bottom of the receptacle and pumping fluid in response to the movement of the receptacle in the first direction.

6. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant slowly in a first direction along an axis of movement and quickly in the reverse direction, a fluid pump, a fluid follower, and means for positioning said pump within said receptacle, said last mentioned means including means slidably extending axially through said fluid follower with the pump resting on the bottom of the receptacle and pumping fluid in response to the movement of the receptacle in the first direction, and a weight coupled to said fluid follower and applying an impact force thereto in response to the quick movement of the receptacle in the reverse direction.

7. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant in both directions along an axis of movement, a fluid pump including a piston and a body having a recess for receiving said piston, said piston and body being relatively movable with respect to one another along said axis of movement, a fluid follower having a generally inverted cup shape and including a perforated plate covering the opening of said cup, and means including a cylindrical member for supporting said pump in axial alignment with said fluid follower with said pump body being disposed at the bottom of the receptacle, said fluid follower and cylindrical member being relatively movable with respect to one another whereby the movement of said receptacle along said axis reciprocally drives said pump body with respect to the piston thereby pumping lubricant with the follower assuming the level of the lubricant within the receptacle.

8. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant slowly in a first direction along an axis of movement and quickly in the reverse direction, a fluid pump including a piston and a body having a recess for receiving said piston, said piston and body being relatively movable with respect to one another along said axis of movement, a fluid follower having a generally inverted cup shape and including a perforated plate covering the opening of said cup, means for mounting said pump in axial alignment with said fluid follower with said pump body being disposed at the bottom of the receptacle, said fluid follower and mounting means being relatively movable with respect to one another whereby the movement of said receptacle along said axis reciprocally drives said pump body with respect to the piston thereby pumping lubricant with the follower assuming the level of the lubricant within the receptacle, and a weight spring coupled to said fluid follower and applying an impact force thereto in response to quick movement of the receptacle in the reverse direction.

9. In a dispenser for lubricants which are stored within a receptacle, means for moving a receptacle containing a lubricant slowly in a first direction along an axis of movement and quickly in reverse direction, a fluid pump ,including a piston and a body having a recess for receiving said piston, said piston and body being relatively movable with respect to one another along said axis of movement, a fluid follower having a generally inverted cup shape and including a perforated plate covering the opening of said cup, means for supporting said pump in axial alignment with respect to said lluid follower with said pump body being disposed at the bottom of the receptacle, said fluid follower and supporting means being relatively movable with respect to one another whereby the movement of said receptacle along said axis reciprocally drives said pump body with respect to the piston thereby pumping lubricant with the follower assuming the level of the lubricant within the receptacle, a weight spring coupled to said fluid follower and applying an impact force thereto in response to the quick movement of the receptacle in the reverse direction, and means for applying gaseous pressure within said follower when said perforated plate is resting substantially on the bottom of said receptacle.

l0. A dispenser for semi-solid materials such as lubricants which are stored within a receptacle, comprising a frame for holding said receptacle including a pair vertically disposed columns, an elevating motor actuated by compressed air and supported at the lowermost portion of said columns, a horizontally disposed platform for movably supporting a receptacle between said columns in a vertical direction and actuated by said motor, a pair of pneumatic jacks housed at least in part within said columns, a crossarm intercoupling the uppermost portions of said columns and being adjustably elevated by said jacks, a vertically disposed lubricant exhaust tube movably carried by said crossarm, a iluid pump including a cylindrically-shaped piston and fluid valve coupled to the lower terminal portion of said exhaust tube and a pump body including a receiving recess for said piston disposed below said piston, a tubular housing for said exhaust tube and pump piston and having a lower terminal end carrying said pump body, a fluid follower having an inverted cup through which said tubular housing extends, and a perforated plate covering the opening to said follower and having a central 9 opening enabling said pump body and pump housing to pass therethrough.

11. A dispenser for semi-solid materials such as lubricants which are stored within a receptacle, comprising a frame for holding said receptacle including a pair vertically disposed columns, an elevating motor actuated by compressed air and supported at the lowermost portion of said columns, a horizontally disposed platform for movably supporting a receptacle between said columns in a vertical direction and actuated by said motor, a pair of pneumatic jacks housed at least in part within said columns, a crossarm intercoupling the uppermost portions of said columns and being adjustably elevated by said jacks, `a vertically disposed lubricant exhaust tube movably carried by said crossarm, a ltluid pump including a cylindrically-shaped piston and fluid valve coupled to the lower terminal portion of said exhaust tube and a pump body including a receiving recess for said piston disposed below said piston, a tubular housing for said exhaust tube and pump piston and having a lower terminal carrying said pump body, a uid follower having an inverted end cup through which said tubular housing extends, a perforated plate covering the opening to said follower and having a central opening enabling said pump body and pump housing to pass therethrough, and a weight spring coupled to said follower.

12. A dispenser for semi-solid materials such as lubricants which are stored within a receptacle, comprising a frame for holding said receptacle including a pair vertically disposed columns, an elevating motor actuated by compressed air .and supported at the lowermost portion of said columns, a horizontally disposed platform for movably supporting a receptacle between said columns in a vertical direction and actuated yby said motor, a pair `of pneumatic jacks housed at least in part within said columns, a crossarm intercoupling the uppermost portions of said columns and being adjustably elevated by said jacks, a vertically disposed lubricant exhaust tube movably carried by said crossarm, a fluid pump including a cylindrically-shaped piston and fluid valve coupled to the lower terminal portion of said exhaust tube and a pump body including a receiving recess for said piston disposed below said piston, a tubular housing for said exhaust tube and pump piston and having a lower terminal carrying said pump body, a iluid follower having an inverted end cup slida'bly mounted on said tubular housing, a perforated plate covering the opening to said follower and having a central opening enabling said pump body and pump housing to .pass therethrough, a weight spring coupled to said follower, and means for applying gaseous pressure with said follower when said perforated plate is resting substantially of the bottom of said receptacle.

13. In a dispenser for lubricants which are stored within a receptacle, means for moving the receptacle slowly in a iirst direction along an axis of movement and quickly in the reverse direction, a fluid pump including a stationary piston and a pump body movable with said receptacle, said pump body including a pump cha-mber for receiving said piston in response to the movement of said container toward said piston, a sleeve enveloping said piston and supported for movement relative the piston,

means for advancing the sleeve to the pump body to cut a lubricant core aligned with the pump chamber when the piston is withdrawn from the pump chamber in response to the quick movement of the receptacle away 10 from the piston, and outlet means including a passage through the piston for dispensing under pressure the lubricant in response to the next movement of the receptacle toward said piston.

14. `In a dispenser for lubricants which are stored within a receptacle, means for reciprocating the receptacle along an axis of movement, a fluid pump including a stationary piston and a pump body movable with said receptacle, said pump body including a pump chamber for receiving said piston in response to the movement of said container toward said piston, a sleeve enveloping said piston and supported for movement relative the piston, means for advancing the sleeve to the pump body to cut a lubricant core aligned with the pump chamber when the piston is withdrawn from the pump chamber in response to the movement of the receptacle away from the piston, and outlet means including a passage through the piston for dispensing under pressure the lubricant in response to the next movement `of the receptacle toward said piston.

15. In a dispenser for lubricants which are stored within a receptacle, means for moving the receptacle slowly in a rst direction along an axis of movement and quickly in the reverse direction, a fluid pump including a stationary piston and a pump body movable with said receptacle, said pump body including a pump chamber for receiving said piston in response to the movement of said container toward said piston, a sleeve enveloping said piston and supported for movement relative the piston, a fluid follower normally resting at the lubricant level within the receptacle, means for advancing the sleeve to the pump body to cut a lubricant core aligned with the pump chamber when the piston is withdrawn from the pump chamber in response to the quick movement of the receptacle away from the piston, and outlet means including a passage through a piston for dispensing under pressure the lubricant in response to the next movement of the receptacle toward said piston.

16. In a dispenser for lubricants which are stored within a receptacle, means for moving the receptacle slowly in a first direction along an axis of movement and quickly in the reverse direction, a iluid pump including a stationary piston and a pump body movable with said receptacle, said pump body including a pump chamber for receiving said piston in response to the movement of said container toward said piston, a sleeve enveloping said piston and supported from movement relative the piston, a fluid follower normally resting at the lubricant level within the receptacle, a weight coupled to the iluid follower and applying an impact force thereto in response to the quick movement of the receptacle, means for advancing the sleeve to the pump body to cut a lubricant core aligned with the pump cham-ber when the piston is withdrawn from the pump chamber in response to the quick movement of the receptacle away from the piston, and outlet means including a passage through a piston for dispensing under pressure the lubricant in response to the next movement of the receptacle toward said piston.

References Cited in the iile of this patent UNITED STATES PATENTS 2,540,391 Harrison Feb. 6, 1951 2,555,532 Chinchole June 5, 1951 2,656,952 Chinchole Oct. 27, 1953 

